void setup() {
  // put your setup code here, to run once:
  pinMode(6,OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
  digitalWrite(6,HIGH);
  delay(2000);
  digitalWrite(6,LOW);
  delay(2000);
}
//继电器接电注意事项：
//1.VBAT要接入Arduino的5V
//2.D6给低电平的时候，继电器亮灯，电路断开。
